{
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  "description": "A method for operating a power factor correction (PFC) circuit (110) of an uninterruptible power supply (UPS) apparatus (100) is provided. The PFC circuit (110) includes two T-type converters, and each of the T-type converters includes four switching tubes (Q1-Q4, Q5-Q8). The method includes…",
  "path": "/patents/1418369",
  "publishedAt": "2024-07-31T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J7/865",
    "DELTA ELECTRONICS INC [TW]"
  ],
  "textContent": "A method for operating a power factor correction (PFC) circuit (110) of an uninterruptible power supply (UPS) apparatus (100) is provided. The PFC circuit (110) includes two T-type converters, and each of the T-type converters includes four switching tubes (Q1-Q4, Q5-Q8). The method includes: converting AC input voltage into a positive bus voltage (V1) across a first capacitor (C1) and a negative bus voltage (V2) across a second capacitor (C2) that is connected in series with the first capacitor (C1) when the UPS apparatus (100) is operated under a normal supply mode; and controlling conduction states of the switching tubes (Q1-Q8) of the T-type converters to balance the positive bus voltage (V1) and the negative bus voltage (V2) when the UPS apparatus (100) is operated under a battery supply mode.",
  "title": "METHOD FOR OPERATING POWER FACTOR CORRECTION CIRCUIT AND METHOD FOR OPERATING UNINTERRUPTIBLE POWER SUPPLY APPARATUS"
}